I am breaking in a new custom barrel and I noticed that I am getting bad powder fouling after one shot. I am shooting the same load that I shot last year. I had heard that this could be caused by not running a hot enough load. I have no signs of over pressuring. Iam using H4831SC, Iam shooting a 7MM. I will load it up some more to see if that helps but I was just wondering what your thoughts are. Thanks
